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Simultaneous longitudinal and transverse oscillations in an active-region filament

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dc.contributor.author Pant, V
dc.contributor.author Mazumder, R
dc.contributor.author Yuan, Ding
dc.contributor.author Banerjee, D
dc.contributor.author Srivastava, A. K
dc.contributor.author Shen, Yuandeng
dc.date.accessioned 2020-11-17T11:54:22Z
dc.date.available 2020-11-17T11:54:22Z
dc.date.issued 2016-11
dc.identifier.citation Solar Physics, Vol. 291, No. 11, pp. 3303-3315 en_US
dc.identifier.issn 1573-093X
dc.identifier.uri http://prints.iiap.res.in/handle/2248/7057
dc.description Restricted Access © Springer The original publication is available at springerlink.com http://dx.doi.org/10.1007/s11207-016-1018-7 en_US
dc.description.abstract We report on the co-existence of longitudinal and transverse oscillations in an active-region filament. On March 15, 2013, an M1.1 class flare was observed in Active Region AR 11692. A coronal mass ejection (CME) was found to be associated with the flare. The CME generated a shock wave that triggered the oscillations in a nearby filament, situated south-west of the active region as observed from National Solar Observatory (NSO) Global Oscillation Network Group (GONG) Hα images. In this work we report the longitudinal oscillations in the two ends of the filament, which co-existed with the transverse oscillations. We propose a scenario in which an incoming shock wave hits the filament obliquely and triggers both longitudinal and transverse oscillations. Using the observed parameters, we estimate the lower limit of the magnetic field strength. We use a simple pendulum model with gravity as the restoring force to estimate the radius of curvature. We also calculate the mass accretion rate that causes the filament motions to damp quite fast. en_US
dc.language.iso en en_US
dc.publisher Springer en_US
dc.subject Sun, oscillation en_US
dc.subject Sun, filament en_US
dc.subject Sun, magnetic field en_US
dc.title Simultaneous longitudinal and transverse oscillations in an active-region filament en_US
dc.type Article en_US


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